The Foo Fighters performed on 'The Daily Show' (weekdays, 11PM ET on Comedy Central) as part of what Jon Stewart called "our latest installment of our band-a-year series." Between the songs "Bridge Burning" and "Arlandria" from the band's new album 'Wasting Light,' Stewart engaged Foo Fighters' front man Dave Grohl in some lighthearted banter about what was going on backstage.

"I've known you for a long time. You've been a rock star the whole long time. But, dude, not to blow the image -- backstage, it's like romper room back there. There must by 28 little kids," Stewart said.

Grohl confirmed that since he and the rest of the band all have children now, backstage isn't quite what it once was. But just because the preschool set have taken over doesn't mean any craziness is a thing of the past.